Answer in brief
CVE-2024-27437 records a Unknown severity vulnerability in vfio/pci: Disable auto-enable of exclusive INTx IRQ. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 3.6 | Not reported |
| Linux/Linuxgeneric | >=89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 <26389925d6c2126fb777821a0a983adca7ee6351 || >=89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 <561d5e1998d58b54ce2bbbb3e843b669aa0b3db5 || >=89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 <b7a2f0955ffceffadfe098b40b50307431f45438 || >=89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 <139dfcc4d723ab13469881200c7d80f49d776060 || >=89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 <2a4a666c45107206605b7b5bc20545f8aabc4fa2 || >=89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 <3b3491ad0f80d913e7d255941d4470f4a4d9bfda || >=89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 <bf0bc84a20e6109ab07d5dc072067bd01eb931ec || >=89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 <fe9a7082684eb059b925c535682e68c34d487d43 | 26389925d6c2126fb777821a0a983adca7ee6351, 561d5e1998d58b54ce2bbbb3e843b669aa0b3db5, b7a2f0955ffceffadfe098b40b50307431f45438, 139dfcc4d723ab13469881200c7d80f49d776060, 2a4a666c45107206605b7b5bc20545f8aabc4fa2, 3b3491ad0f80d913e7d255941d4470f4a4d9bfda, bf0bc84a20e6109ab07d5dc072067bd01eb931ec, fe9a7082684eb059b925c535682e68c34d487d43 |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <V1.1.1 | V1.1.1 |
Published upstream
Apr 5, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Disable auto-enable of exclusive INTx IRQ Currently for devices requiring masking at the irqchip for INTx, ie. devices without DisINTx support, the IRQ is enabled in request_irq() and subsequently disabled as necessary to align with the masked status flag. This presents a window where the interrupt could fire between these events, resulting in the IRQ incrementing the disable depth twice. This would be unrecoverable for a user since the masked flag prevents nested enables through vfio. Instead, invert the logic using IRQF_NO_AUTOEN such that exclusive INTx is never auto-enabled, then unmask as required.
Quoted source text, attributed separately from HOL analysis.